CN110663235A - User terminal and wireless communication method - Google Patents

Abstract

A user terminal according to an aspect of the present invention includes: a receiving unit configured to receive setting information for multiplexing a short uplink control channel having a short time length and a long uplink control channel having a longer time length than the short uplink control channel for a predetermined period; and a control unit configured to determine whether to multiplex the short uplink control channel and the long uplink control channel in the predetermined period based on the setting information. According to an aspect of the present invention, even when a plurality of uplink control channels having different time lengths are used, uplink control information can be appropriately notified.

Description

User terminal and wireless communication method

Technical Field

The present invention relates to a user terminal and a wireless communication method in a next generation mobile communication system.

Background

In a UMTS (Universal Mobile Telecommunications System) network, Long Term Evolution (LTE) is standardized for the purpose of further high data rate, low latency, and the like (non-patent document 1). Furthermore, for the purpose of further broadband and speed increase with respect to LTE (also referred to as LTE rel.8 or 9), LTE-a (also referred to as LTE-Advanced, LTE rel.10, 11 or 12) is standardized, and further systems following LTE (for example, also referred to as FRA (Future Radio Access), 5G (fifth generation mobile communication system), 5G + (plus), nr (New Radio), NX (New Radio Access)), FX (next generation Radio Access), LTE rel.13, 14 or 15, and the like) are discussed.

In conventional LTE systems (e.g., LTE rel.8 to 13), Downlink (DL) and/or Uplink (UL) communications are performed using 1ms subframes (also referred to as Transmission Time Intervals (TTIs) or the like). This subframe is a transmission time unit of 1 data packet after channel coding, and is a processing unit of scheduling, link adaptation, retransmission control (HARQ: Hybrid Automatic Repeat reQuest), and the like.

In addition, in conventional LTE systems (e.g., LTE rel.8 to 13), a User terminal (UE) transmits Uplink control information (Uplink control information) using an Uplink control Channel (e.g., a Physical Uplink control Channel) and/or an Uplink data Channel (e.g., a Physical Uplink Shared Channel). The structure (format) of the uplink control channel may also be referred to as a PUCCH format or the like.

The UCI includes at least one of a Scheduling Request (SR), retransmission control Information (also referred to as Hybrid Automatic retransmission Request-acknowledgement (HARQ-ACK), ACK/NACK (Negative acknowledgement (Negative ACK)), etc.) for DL data (DL data Channel (Physical Downlink Shared Channel (PDSCH)), Channel State Information (CSI: Channel State Information).

Documents of the prior art

Non-patent documents: 3GPP TS 36.300V8.12.0 "Evolved Universal Radio Access (E-UTRA) and Evolved Universal Radio Access Network (E-UTRAN); (ii) an Overall description; stage 2(Release 8) ", 4 months 2010

Disclosure of Invention

Problems to be solved by the invention

Future wireless communication systems (e.g., 5G, NR) are expected to implement various wireless communication services to meet various requirements (e.g., ultra high speed, large capacity, ultra low latency, etc.).

For example, NR is under discussion of providing wireless Communication services called eMBB (enhanced Mobile broadband Band) supporting high-speed large-capacity Communication, mtc (large machine Type Communication) supporting a large number of terminals, URLLC (Ultra Reliable and Low Latency Communication) supporting Ultra-high-reliability Low-Latency Communication, and the like.

However, it is being discussed to utilize a plurality of PUCCHs having mutually different time lengths (e.g., the number of symbols) in NR. However, multiplexing of the two PUCCHs by the same UE within 1 slot has not been discussed so far. It is expected that the flexibility of scheduling in NR can be improved by such a structure. Further, if such a configuration is not available, there is a possibility that the frequency use efficiency or the like is deteriorated.

The present invention has been made in view of the above, and an object thereof is to provide a user terminal and a radio communication method capable of appropriately notifying uplink control information even when a plurality of uplink control channels having different time lengths are used.

Means for solving the problems

A user terminal according to an aspect of the present invention includes: a receiving unit configured to receive setting information for multiplexing a short uplink control channel having a short time length and a long uplink control channel having a longer time length than the short uplink control channel for a predetermined period; and a control unit configured to determine whether to multiplex the short uplink control channel and the long uplink control channel in the predetermined period based on the setting information.

Effects of the invention

According to the present invention, even when a plurality of uplink control channels having mutually different time lengths are used, uplink control information can be appropriately notified.

Drawings

Fig. 1A to 1C are diagrams showing an example of resource mapping of NR slots.

Fig. 2A to 2C are diagrams showing an example of resource mapping in the case where TDM and/or FDM is performed on the long PUCCH and the short PUCCH of different UEs.

Fig. 3A to 3C are diagrams showing an example of resource mapping in the case where TDM is performed on the long PUCCH and the short PUCCH.

Fig. 4A to 4C are diagrams showing another example of resource mapping in the case where TDM is performed on the long PUCCH and the short PUCCH.

Fig. 5A to 5C are diagrams showing an example of resource mapping in a case where transmission timings of a long PUCCH and a short PUCCH overlap in time in the same slot.

Fig. 6A to 6B are diagrams showing an example of resource mapping in the case where TDM and FDM are performed on the long PUCCH and the short PUCCH.

Fig. 7 is a diagram showing an example of a schematic configuration of a wireless communication system according to an embodiment of the present invention.

Fig. 8 is a diagram showing an example of the overall configuration of a radio base station according to an embodiment of the present invention.

Fig. 9 is a diagram showing an example of a functional configuration of a radio base station according to an embodiment of the present invention.

Fig. 10 is a diagram showing an example of the overall configuration of a user terminal according to an embodiment of the present invention.

Fig. 11 is a diagram showing an example of a functional configuration of a user terminal according to an embodiment of the present invention.

Fig. 12 is a diagram showing an example of hardware configurations of a radio base station and a user terminal according to an embodiment of the present invention.

Detailed Description

It is under discussion that in future wireless communication systems (e.g., LTE rel.14, 15 and beyond, 5G, NR and so on, hereinafter also referred to as NR), multiple parameter sets are introduced instead of a single parameter set.

Here, the parameter set may mean a set of communication parameters for characterizing the design of signals, the design of RATs, and the like in a certain RAT (Radio Access Technology), or may be parameters related to the frequency direction and/or the Time direction, such as a SubCarrier Spacing (SCS), a symbol length, a cyclic prefix length, a subframe length, and a Transmission Time Interval (TTI) length. For example, in NR, a plurality of SCS of 15kHz, 30kHz, 60kHz, 120kHz, 240kHz, etc. may be supported.

In addition, in NR, introduction of the same and/or different time units (e.g., also referred to as subframes, slots, mini-slots, sub-slots, TTIs, short TTIs, radio frames, etc.) as in the existing LTE system (before LTE rel.13) with support of multiple parameter sets, etc. is being discussed.

The TTI may also indicate a time unit for transmitting and receiving a transport block, a code block, a codeword, and/or the like of transmission and reception data. Given a TTI, the time interval (symbol data) of the transport block, code block and/or codeword to which data is actually mapped may be shorter than the TTI.

For example, when a TTI is composed of a predetermined number of symbols (for example, 14 symbols), a transport block, a code word, and/or the like for transmitting/receiving data may be transmitted/received in a symbol interval of 1 to a predetermined number of symbols. When the number of symbols for transmission and reception of transport blocks, code blocks, and/or codewords for transmission and reception of data is smaller than the number of symbols constituting a TTI, a reference signal, a control signal, and the like can be mapped to a symbol to which data is not mapped within the TTI.

The subframe may be a time unit having a predetermined time length (e.g., 1ms) regardless of a parameter set used (and/or set) by a User terminal (e.g., User Equipment).

On the other hand, a slot may be a time unit based on a set of parameters utilized by the UE. For example, in the case where the SCS is 15kHz or 30kHz, the number of symbols per 1 slot may be 7 or 14 symbols. In the case where the subcarrier interval is 60kHz or more, the number of symbols per 1 slot may be 14 symbols. In addition, the time slot may include a plurality of mini (sub) time slots.

Generally, SCS is in inverse relation to the symbol length. Therefore, if the number of symbols per slot (or mini (sub) slot) is the same, the higher (wide) the SCS, the shorter the slot length, the lower (narrow) the SCS, the longer the slot length. In addition, "SCS high" may be replaced by "SCS wide" and "SCS low" may be replaced by "SCS narrow".

In NR, it is discussed that UL Control channels (hereinafter, also referred to as short PUCCH (short PUCCH), short PUCCH (shortened PUCCH)), which are configured with a shorter period (short duration) than the Physical Uplink Control Channel (PUCCH) format of the conventional LTE system (e.g., LTE rel.8 to 13), and/or UL Control channels (hereinafter, also referred to as long PUCCH), which are configured with a longer period (long duration) than the short period, are supported.

The short PUCCH may be referred to as a short-term PUCCH (PUCCH in short duration), and the long PUCCH may be referred to as a long-term PUCCH (PUCCH in long duration). Alternatively, the short PUCCH may be referred to as PUCCH format 1, PUCCH structure 1, PUCCH mode 1, or the like, and the long PUCCH may be referred to as PUCCH format 2, PUCCH structure 2, PUCCH mode 2, or the like. In addition, 1 and 2 can be reversed.

The short PUCCH is configured by a predetermined number of symbols (for example, 1 or 2 symbols) in a certain SCS. In the short PUCCH, Uplink Control Information (UCI) and a Reference Signal (RS) may be Time Division Multiplexed (TDM) or Frequency Division Multiplexed (FDM). The RS may be, for example, a DeModulation Reference Signal (DMRS) used for DeModulation of UCI.

The SCS of each symbol of the short PUCCH may be the same as or higher than the SCS of a symbol for a data channel (hereinafter, referred to as a data symbol). The data Channel may be, for example, a Downlink data Channel (PDSCH: Physical Downlink Shared Channel), an Uplink data Channel (PUSCH: Physical Uplink Shared Channel), or the like.

The short PUCCH may also be referred to as a higher (large, wide) SCS (e.g., 60kHz) PUCCH. In addition, a time unit for transmitting 1 short PUCCH may also be referred to as a short TTI.

In the short PUCCH, a multi-carrier waveform (for example, a waveform based on Cyclic Prefix OFDM (CP-OFDM)) may be used, or a single-carrier waveform (for example, a waveform based on DFT Spread OFDM (DFT-S-OFDM): Discrete Fourier Transform Orthogonal Frequency Division Multiplexing) may be used.

The waveform may be referred to as a transmission scheme, a multiplexing scheme, a modulation scheme, an access scheme, a waveform scheme, or the like. Further, the waveform may be characterized by the presence or absence of DFT precoding (spreading) applied to the OFDM waveform. For example, CP-OFDM may also be referred to as a waveform (signal) to which DFT precoding is not applied, and DFT-S-OFDM may also be referred to as a waveform (signal) to which DFT precoding is applied. The "waveform" may be replaced with "a signal of a waveform", "a signal according to a waveform", "a waveform of a signal", "a signal", or the like.

On the other hand, the long PUCCH is configured across multiple symbols within the slot in order to improve coverage and/or to transmit more UCI than the short PUCCH. Candidates for multiple symbols supported by the long PUCCH may be specified or set. For example, the plurality of symbols supported by the long PUCCH may be symbols equal to or greater than a predetermined number of symbols (e.g., 4 symbols). In the long PUCCH, UCI and RS (e.g., DMRS) may be TDM or FDM.

The long PUCCH may also be referred to as a lower (small, narrow) SCS (e.g., 15kHz) PUCCH. In addition, a time unit for transmitting one long PUCCH may also be referred to as a long TTI.

The long PUCCH may be configured with the same number of frequency resources as the short PUCCH, or may be configured with a smaller number of frequency resources (e.g., 1 or 2 Physical Resource blocks) than the short PUCCH in order to obtain a power boosting effect. The long PUCCH may be configured in the same slot as the short PUCCH.

In the long PUCCH, a single carrier waveform (e.g., DFT-s-OFDM waveform) may be used, and a multi-carrier waveform (e.g., OFDM waveform) may be used. In the long PUCCH, frequency hopping may be applied for each predetermined period (for example, a mini (sub) slot) in the slot.

The long PUCCH may be a PUCCH (PUCCH of a different format) different from the PUCCH defined in the conventional LTE system (e.g., LTE rel.8 to 13).

Hereinafter, the symbol abbreviated as "PUCCH" may be replaced with "short PUCCH and/or long PUCCH".

The PUCCH may be TDM and/or FDM with a UL data channel (hereinafter, also referred to as PUSCH) within a slot. In addition, the PUCCH may perform TDM and/or FDM with a DL data Channel (hereinafter, also referred to as PDSCH) and/or a DL Control Channel (hereinafter, also referred to as Physical Downlink Control Channel) within a slot.

With the PUCCH, UCI containing at least one of retransmission control information (also referred to as HARQ-ACK, ACK/NACK, a/N, etc.), Scheduling Request (SR), CSI (e.g., Periodic CSI (P-CSI: Periodic CSI), Aperiodic CSI (a-CAI: Aperiodic CSI)), beam identification information, Buffer Status Report (BSR: Buffer Status Report), Power Headroom Report (PHR), and other control information for DL data is transmitted.

In addition, the Beam identification information may be determined by a Beam Index (BI: Beam Index), a Precoding Matrix Indicator (PMI: Precoding Matrix Indicator), tpmi (transmitted PMI), a Port Index of a prescribed reference signal (e.g., DMRS Port Index (DPI: DMRS Port Index), SRS Port Index (SPI: SRS Port Index)), a Resource Indicator of a prescribed reference signal (e.g., CSI-RS Resource Indicator (CRI: CSI-RS Resource Indicator), DMRS Resource Index (DRI: DMRS Resource Index), SRS Resource Index (SRI: SRS Resource Index)), and the like.

Fig. 1A to 1C are diagrams showing an example of resource mapping of NR slots. In NR, it is discussed that a period during which data is transmitted is defined as an UL period, and a period during which UL transmission can be performed with a small number of symbols is defined as a short UL period. The UL period may be referred to as a long UL period. In addition, "period" may be replaced with "region", "resource", "symbol", or the like. Further, the structure of the NR slot (NR subframe) is not limited to the examples shown in fig. 1A to 1C. For example, the order of the regions is not limited to the illustrated order.

In fig. 1A, from the beginning of the NR slot, slots are formed in the order of a PDCCH region, a PDSCH region, a non-transmission Period (also referred to as a Guard Period (GP), Guard Period), and a short UL region including a short PUCCH. Such a slot including more symbols for DL communication than symbols for UL communication may also be referred to as a DL-dominant slot.

In fig. 1B, from the beginning of the NR slot, slots are formed in the order of a PDCCH region, a guard period, a UL region including a long PUCCH and a PUSCH, and a short UL region including a short PUCCH. Such a slot including more symbols for UL communication than DL communication may also be referred to as a UL-based slot.

In fig. 1C, slots are formed in the order of the UL region including the long PUCCH and the PUSCH and the short UL region including the short PUCCH from the NR slot head. A slot of a symbol in which DL communication is not performed (or a slot including only a symbol in which UL communication is performed) may be referred to as a UL-only slot. In addition, the UL-only slot may include a guard period.

However, in NR, it is being discussed to support TDM and/or FDM of a short PUCCH and a long PUCCH for respectively different UEs within 1 slot.

In addition, in URLLC, in order to realize low delay, resources for SR transmission are set by a time interval shorter than 1 slot.

Fig. 2A to 2C are diagrams showing an example of resource mapping in the case where TDM and/or FDM is performed on the long PUCCH and the short PUCCH of different UEs. Fig. 2A and 2C show examples of a DL-based slot.

In fig. 2A, the short PUCCH is TDM with the long PUCCH and the PUSCH. In fig. 2B, the short PUCCH and the long PUCCH are TDM, and the PUSCH and the short PUCCH and the long PUCCH are TDM and FDM. In fig. 2C, short PUCCH and long PUCCH are TDM and FDM, and PUSCH are TDM.

However, multiplexing of the short PUCCH and the long PUCCH (for the same UE) for the same UE in 1 slot has not been discussed so far. With such a configuration, it is expected that the flexibility of scheduling in NR can be improved. If such a configuration is not available, communication throughput, frequency use efficiency, and the like may deteriorate.

Accordingly, the present inventors have discussed a method for multiplexing a short PUCCH and a long PUCCH for the same UE within 1 slot, and have completed the present invention. Further, when multiplexing the short PUCCH and the long PUCCH for the same UE in 1 slot, a method of appropriately using the two PUCCHs (allocating signals, etc.) has been found.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings. The wireless communication methods according to the respective embodiments may be applied individually or in combination.

(Wireless communication method)

< first embodiment >

The first embodiment relates to a case where multiplexing of a long PUCCH and a short PUCCH in the same slot is set in a UE.

In the same slot, the UE may transmit UCI corresponding to different UCI types through the PUCCH and the short PUCCH, and may also transmit UCI corresponding to the same UCI type.

Here, the UCI type may contain information indicating the content of the UCI (of which UCI is transmitted). For example, the UCI type may be information indicating a case where UCI includes a specific one or more of HARQ-ACK, SR, CSI, P-CSI, a-CSI, beam identification information, BSR, PHR, and other control information.

In addition, the UCI type may contain information on performance and/or quality required for UCI. For example, the UCI type may include any one of delay (low delay, etc.), reliability (high reliability, etc.), throughput (high throughput, etc.), or a combination of these. In addition, the UCI type may also include information related to a service type of NR, for example, information indicating that UCI is UCI for at least one of eMBB, URLLC, and mtc.

For example, the UE may transmit 1 or more P-CSI using the long PUCCH and 1 or more HARQ-ACKs using the short PUCCH in the same slot. In this case, the CSI report having a relatively large payload can be transmitted through the long PUCCH having a large resource capacity, and the HARQ-ACK having a relatively small payload can be transmitted through the short PUCCH.

Here, when there is an SR, the SR may be multiplexed with P-CSI of the long PUCCH or HARQ-ACK of the short PUCCH. In addition, different SRs requiring different resources for different traffic may be transmitted using both the long PUCCH and the short PUCCH.

In addition, the UE may transmit HARQ-ACK corresponding to specific type of DL data using the long PUCCH and transmit HARQ-ACK corresponding to other type of DL data using the short PUCCH in the same slot. For example, the long PUCCH may be used for HARQ-ACK for highly reliable (e.g., URLLC-oriented) DL data, and the short PUCCH may be used for HARQ-ACK for low-delay (e.g., eMBB-oriented) DL data. In this case, UCI requiring high reliability is fed back through a long PUCCH which easily ensures quality, and delay can be reduced by applying a short PUCCH to UCI for which low delay is expected.

In addition, in case that HARQ-ACK is transmitted through both the long PUCCH and the short PUCCH, HARQ-ACK of both may be HARQ-ACK for data transmitted and received in different slots, mini slots, component carriers, and/or cells.

For example, when the long PUCCH and the short PUCCH are transmitted in the nth slot, the HARQ-ACK for data up to the nth-k-1 slot is transmitted through the long PUCCH, and the HARQ-ACK for data of the nth-k slot can be transmitted through the short PUCCH. In this case, even when HARQ-ACK for data of the n-k slot cannot be transmitted through the long PUCCH due to insufficient processing time, the short PUCCH takes a large processing time to start transmission, and thus data can be decoded and HARQ-ACK can be appropriately generated.

Alternatively, when the long PUCCH and the short PUCCH are transmitted in the m-th component carrier, the HARQ-ACK for data other than the m-th component carrier can be transmitted through the long PUCCH, and the HARQ-ACK for data of the m-th component carrier can be transmitted through the short PUCCH. In this case, since HARQ-ACK for data of the m-th component carrier and HARQ-ACK for data of other component carriers can be generated by different processing times, HARQ-ACK generation with lower delay can be realized in a specific component carrier.

When there is an SR, the SR may be multiplexed with HARQ-ACK of the long PUCCH or may be multiplexed with HARQ-ACK of the short PUCCH. In addition, different SRs requiring different resources for different traffic may be transmitted using both the long PUCCH and the short PUCCH.

The UE may determine UCI transmitted through the long PUCCH and/or the short PUCCH based on information about a UCI type that can be transmitted through the long PUCCH and/or the short PUCCH.

Information on UCI types that can be transmitted through the long PUCCH and/or the short PUCCH may be notified (set) from a base station (which may also be referred to as bs (base station), Transmission Reception Point (TRP), enb (enode b), gNB, or the like) to the UE using higher layer signaling (e.g., Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling (e.g., MAC Control Element (MAC CE), broadcast Information, or the like)), physical layer signaling (e.g., Downlink Control Information (DCI)), or a combination thereof.

Further, the UE can determine (be set to) a resource for transmitting the long PUCCH and/or the short PUCCH based on information on the time and/or frequency resource of the long PUCCH and/or the short PUCCH.

Information on time and/or frequency resources of the long PUCCH and/or the short PUCCH may be notified (set) from the base station to the UE using higher layer signaling (e.g., RRC signaling, broadcast information), physical layer signaling (e.g., DCI), or a combination thereof.

The information on the time and/or frequency resources of the long PUCCH and/or the short PUCCH may be at least one of transmission timing (slot index, etc.), transmission cycle, number of symbols, symbol length, number of resource blocks, information on hopping (for example, whether hopping is performed or not, an index for determining a hopping pattern), and the like.

In addition, the long PUCCH and the short PUCCH may be TDM, FDM, TDM, and FDM.

A multiplexing method (e.g., TDM and/or FDM) of the long PUCCH and the short PUCCH in the same slot may be set for the UE. The information on the multiplexing method may be notified (set) by higher layer signaling (e.g., RRC signaling, broadcast information), physical layer signaling (e.g., DCI), or a combination thereof.

[ TDM of Long PUCCH and short PUCCH ]

When TDM is performed on the long PUCCH and the short PUCCH (set to perform TDM), the UE transmits either the long PUCCH or the short PUCCH at a predetermined time in accordance with scheduling by the base station (for example, a timing command based on the above-described information on the time and/or frequency resources). This enables PUCCH power to be amplified, and thus coverage can be easily secured. The base station preferably performs control so that the time and frequency resources of the long PUCCH and the short PUCCH do not overlap.

Fig. 3A to 3C are diagrams showing an example of resource mapping in the case where TDM is performed on the long PUCCH and the short PUCCH. Fig. 3A and 3C show an example of a DL-based slot in which 1 slot is composed of 7 OSs (OFDM symbols), and fig. 3B shows an example of a UL-only slot in which 1 slot is composed of 14 OSs. In addition, the number of OSs of the slot is not limited thereto.

In fig. 3A to 3C, the short PUCCH performs TDM with the long PUCCH and the PUSCH. In fig. 3B, TDM is performed such that a short PUCCH of 2 OS length is located at the beginning, center, and end of a slot, and a long PUCCH and PUSCH of 4 OS length are located therebetween. In this way, the short PUCCH, the long PUCCH, the PUSCH, and the like can be transmitted through a plurality of discontinuous regions within 1 slot.

Fig. 3A and 3B are used for the case where the transition time (transition time) is small (or short). Here, the transition time may be referred to as a transition period (transition period), a waveform-free defined interval, or the like, and is a time for switching from the power required at the time of off to the power required at the time of on (or vice versa).

The quality of the transmitted signal is not guaranteed during the transition time. Thus, the UE is allowed to transmit inaccurate (or not meeting the specified quality) signals and/or not transmit signals in the transition time. That is, distortion of the waveform is allowed at the transfer time. The transition time may be one or a plurality of periods, and for example, a predetermined period (for example, 20 μ s or 5 μ s) may be defined.

When the short PUCCH is applied, since a transition time occurs in a slot, interference or the like may occur between the short PUCCH and another signal (or a channel), and communication quality may be degraded. Therefore, in the case of using a larger (or longer) transition time, as shown in fig. 3C, it is preferable to set a gap period before (and/or after) the short PUCCH to reduce the influence of the larger transition time.

Fig. 4A to 4C are diagrams showing another example of resource mapping in the case where TDM is performed on the long PUCCH and the short PUCCH. Fig. 4A to 4C show examples of frequency resources (bandwidths) of the short PUCCH and the long PUCCH in fig. 3A to 3C, respectively. In fig. 4A to 4C, the short PUCCH performs TDM with the long PUCCH, and performs TDM and FDM with the PUSCH.

In the same slot, the resources (e.g., time and/or frequency resources) of the long PUCCH and the resources of the short PUCCH may overlap (be set to overlap). For example, there are cases where two resources overlap in time, overlap in frequency, and the like. The control in this case will be described with reference to fig. 5.

Fig. 5A to 5C are diagrams showing an example of resource mapping when transmission timings of a long PUCCH and a short PUCCH overlap in time in the same slot. The left part of fig. 5A to 5C indicates the resources of the short PUCCH by dotted lines.

In the same slot, when the transmission timings of the long PUCCH and the short PUCCH overlap in time, the UE may perform at least one of the following controls (1) to (3): (1) discard long PUCCH (fig. 5A), (2) discard short PUCCH (fig. 5B), and (3) puncture long PUCCH (fig. 5C) in overlapping symbols. In the right part of fig. 5A-5C, discarded or punctured resources are shown with dashed lines.

In the case of (1) above, HARQ-ACKs and/or SRs, which are intended to be transmitted through the long PUCCH, may also be transmitted through the short PUCCH (piggyback). A part or all of UCI (e.g., CSI) corresponding to other UCI types (other than HARQ-ACK and SR) which are intended to be transmitted through the long PUCCH may be transmitted through the short PUCCH, and the prescribed information may be discarded based on the prescribed priority.

In the case of (2) above, HARQ-ACKs and/or SRs, which are intended to be transmitted through the short PUCCH, may also be transmitted through the long PUCCH. A part or all of UCI (e.g., CSI) corresponding to other UCI types (other than HARQ-ACK and SR) which are intended to be transmitted through the short PUCCH may be transmitted through the long PUCCH, and also prescribed information may be discarded based on a prescribed priority.

The information on the predetermined priority, the information on the predetermined information to be discarded, and the like may be notified to the UE by higher layer signaling or the like, or may be determined in advance in the specification.

In the case of (3) above, UCI, which is intended to be transmitted through punctured resources of the long PUCCH, may be transmitted through the short PUCCH or may not be transmitted. Also, information on punctured resources (symbols) of the long PUCCH can be transmitted through the short PUCCH.

[ TDM and FDM for long PUCCH and short PUCCH ]

When TDM and FDM are performed on the long PUCCH and the short PUCCH, the UE transmits one or both of the long PUCCH and the short PUCCH at a predetermined time according to scheduling by the base station. The base station preferably performs control so that the time and frequency resources of the long PUCCH and the short PUCCH do not overlap.

Fig. 6A and 6B are diagrams illustrating an example of resource mapping in the case where TDM and FDM are performed on the long PUCCH and the short PUCCH. Fig. 6A and 6B show examples of a DL-based slot. In fig. 6A and 6B, the short PUCCH performs TDM and FDM with the long PUCCH, and performs TDM with the PUSCH. As shown in fig. 6B, a short PUCCH, PUSCH, and the like may be transmitted in a plurality of discontinuous regions within 1 slot.

In the case where resources (e.g., time and/or frequency resources) of the long PUCCH and the short PUCCH at least partially overlap in the same slot, the UE may perform at least one of the following (1) to (4): (1) discard the long PUCCH, (2) discard the short PUCCH, (3) puncture the long PUCCH in the overlapped symbol, and (4) puncture the short PUCCH in the overlapped symbol.

Regarding UCI transmitted through the discarded and/or punctured PUCCH, as explained in the above TDM example, UCI may be transmitted through the PUCCH that is not discarded and/or punctured.

As described above, according to the first embodiment, even when the UE is set to multiplex the long PUCCH and the short PUCCH in the same slot, the PUCCH can be appropriately transmitted.

< second embodiment >

The second embodiment relates to a case where the UE is not set to multiplex the long PUCCH and the short PUCCH in the same slot.

In the second embodiment, the UE transmits either the long PUCCH or the short PUCCH in 1 slot according to scheduling by the base station (for example, a timing command based on the above-described information on the time and/or frequency resources).

If the transmission timings of the long PUCCH and the short PUCCH overlap each other in time (are set to overlap each other in time) in the same slot, the UE may discard the long PUCCH or the short PUCCH.

In the former case, HARQ-ACKs and/or SRs, which would be intended to be transmitted over the long PUCCH, may be transmitted over the short PUCCH. In the latter case, HARQ-ACKs and/or SRs, which are intended to be transmitted through the short PUCCH, may be transmitted through the long PUCCH. In addition, UCI (e.g., CSI) corresponding to other UCI types (other than HARQ-ACK and SR) may be transmitted through the PUCCH in which it is not discarded, or may be discarded.

As described above, according to the second embodiment, even when the UE is not set to multiplex the long PUCCH and the short PUCCH in the same slot, the PUCCH can be appropriately transmitted.

< third embodiment >

The third embodiment relates to a method of appropriately deciding activation/deactivation of multiplexing of a long PUCCH and/or a short PUCCH in the same slot described in the first and second embodiments.

The UE may transmit capability information (capability information) on whether or not the capability of multiplexing the long PUCCH and the short PUCCH in the same slot is performed to the base station.

For example, the UE may transmit information on at least one of the following as the capability information: (1) TDM supporting a long PUCCH and a short PUCCH in the same slot, (2) FDM supporting a long PUCCH and a short PUCCH in the same slot, (3) TDM and FDM supporting a long PUCCH and a short PUCCH in the same slot, (4) TDM not supporting a long PUCCH and a short PUCCH in the same slot.

The capability information may be common to or separate from (shared) capability information on the capability of multiplexing the NR PUCCH and the NRPUSCH. In the common case, the capability information on multiplexing of PUCCH and PUSCH can be regarded as capability information on multiplexing of long PUCCH and short PUCCH in the same slot (which can be replaced). That is, in the common case, the UE is equivalent to transmitting capability information on multiplexing of a long PUCCH and a short PUCCH in the same slot as long as transmitting capability information on multiplexing of a PUCCH and a PUSCH.

Here, the capability information on multiplexing of the PUCCH and the PUSCH may be, for example, capability information on TDM and/or FDM of the short PUCCH and the PUSCH, or capability information on TDM and/or FDM of the long PUCCH and the PUSCH.

The base station sets a multiplexing method (for example, TDM and/or FDM) of the long PUCCH and the short PUCCH in the same slot to the UE based on the at least one piece of capability information reported from the UE. The information (which may also be referred to as setting information) related to the multiplexing method may be notified (set) by higher layer signaling (e.g., RRC signaling, broadcast information), physical layer signaling (e.g., DCI), or a combination thereof.

The UE may determine whether to multiplex the short PUCCH and the long PUCCH in 1 slot based on the setting information. Based on the determination result, it is possible to determine whether to perform the processing of the first embodiment or the processing of the second embodiment.

As described above, according to the third embodiment, the UE can appropriately determine whether or not multiplexing of the long PUCCH and the short PUCCH in the same slot is possible.

(Wireless communication System)

The configuration of a radio communication system according to an embodiment of the present invention will be described below. In this wireless communication system, communication is performed by any one of the wireless communication methods according to the above-described embodiments of the present invention or a combination thereof.

Fig. 7 is a diagram showing an example of a schematic configuration of a wireless communication system according to an embodiment of the present invention. In the wireless communication system 1, Carrier Aggregation (CA) and/or Dual Connectivity (DC) can be applied in which a plurality of basic frequency blocks (component carriers) are integrated into one unit, the system bandwidth (e.g., 20MHz) of the LTE system being 1.

The wireless communication system 1 may be referred to as LTE (Long Term Evolution), LTE-a (LTE-Advanced), LTE-B (LTE-Beyond), SUPER 3G, IMT-Advanced, 4G (fourth generation mobile communication system), 5G (fifth generation mobile communication system), nr (New Radio), FRA (Future Radio Access), New-RAT (Radio Access Technology), or the like, and may be referred to as a system for implementing these.

The wireless communication system 1 includes a radio base station 11 forming a macrocell C1 having a relatively wide coverage area, and radio base stations 12(12a to 12C) arranged in a macrocell C1 and forming a small cell C2 smaller than the macrocell C1. In addition, the user terminal 20 is arranged in the macro cell C1 and each small cell C2. The arrangement, number, and the like of each cell and user terminal 20 are not limited to those shown in the drawings.

The user terminal 20 can be connected to both the radio base station 11 and the radio base station 12. It is assumed that the user terminal 20 simultaneously uses the macro cell C1 and the small cell C2 by CA or DC. Further, the user terminal 20 can apply CA or DC using a plurality of cells (CCs) (e.g., 5 or less CCs, 6 or more CCs).

Between user terminal 20 and radio base station 11, communication can be performed using a carrier (also referred to as an existing carrier, Legacy carrier, or the like) having a narrow bandwidth in a relatively low frequency band (e.g., 2 GHz). On the other hand, between the user terminal 20 and the radio base station 12, a carrier having a wide bandwidth may be used in a relatively high frequency band (for example, 3.5GHz, 5GHz, or the like), or the same carrier as that between the radio base station 11 may be used. The configuration of the frequency band used by each radio base station is not limited to this.

The user terminal 20 can perform communication in each cell by using Time Division Duplex (TDD) and/or Frequency Division Duplex (FDD). In addition, a single parameter set may be applied in the cell (carrier), or a plurality of different parameter sets may be applied.

Between the Radio base station 11 and the Radio base station 12 (or between 2 Radio base stations 12), a wired connection (for example, an optical fiber based on a CPRI (Common Public Radio Interface), an X2 Interface, or the like) or a wireless connection can be performed.

The radio base station 11 and each radio base station 12 are connected to the upper station apparatus 30, and are connected to the core network 40 via the upper station apparatus 30. The upper station apparatus 30 includes, for example, an access gateway apparatus, a Radio Network Controller (RNC), a Mobility Management Entity (MME), and the like, but is not limited thereto. Each radio base station 12 may be connected to the upper station apparatus 30 via the radio base station 11.

The radio base station 11 is a radio base station having a relatively wide coverage area, and may be referred to as a macro base station, a sink node, an enb (enodeb), a transmission/reception point, or the like. The Radio base station 12 is a Radio base station having a local coverage area, and may be referred to as a small base station, a femto base station, a pico base station, a femto base station, a HeNB (Home eNodeB), an RRH (Remote Radio Head), a transmission/reception point, or the like. Hereinafter, the radio base stations 11 and 12 will be collectively referred to as the radio base station 10 unless distinguished from each other.

Each user terminal 20 is a terminal supporting various communication schemes such as LTE and LTE-a, and may include not only a mobile communication terminal (mobile station) but also a fixed communication terminal (fixed station).

In the wireless communication system 1, as a radio Access scheme, Orthogonal Frequency Division Multiple Access (OFDMA) is applied to a downlink, and Single Carrier Frequency Division Multiple Access (SC-FDMA) and/or OFDMA is applied to an uplink.

OFDMA is a multicarrier transmission scheme in which a frequency band is divided into a plurality of narrow frequency bands (subcarriers) and data is mapped to each subcarrier to perform communication. SC-FDMA is a single carrier transmission scheme in which a system bandwidth is divided into bands each consisting of one or consecutive resource blocks for each terminal, and a plurality of terminals use mutually different bands, thereby reducing interference between terminals. The uplink and downlink radio access schemes are not limited to these combinations, and different radio access schemes may be used.

In the radio communication system 1, as Downlink channels, Downlink Shared channels (PDSCH: Physical Downlink Shared Channel), Broadcast channels (PBCH: Physical Broadcast Channel), Downlink L1/L2 control channels, and the like, which are Shared by the user terminals 20, are used. User data, higher layer control Information, SIB (System Information Block), and the like are transmitted through the PDSCH. Also, MIB (Master Information Block) is transmitted through PBCH.

The Downlink L1/L2 Control channels include PDCCH (Physical Downlink Control Channel), EPDCCH (extended Physical Downlink Control Channel), PCFICH (Physical Control format indicator Channel), PHICH (Physical Hybrid-ARQ indicator Channel), and the like. Downlink Control Information (DCI) including scheduling Information of the PDSCH and/or the PUSCH is transmitted through the PDCCH.

In addition, the scheduling information may be notified through DCI. For example, DCI for scheduling DL data reception may be referred to as DL allocation, and DCI for scheduling UL data transmission may be referred to as UL grant.

The number of OFDM symbols for PDCCH is transmitted through PCFICH. Transmission acknowledgement information (for example, retransmission control information, HARQ-ACK, ACK/NACK, and the like) of HARQ (Hybrid Automatic Repeat reQuest) for PUSCH is transmitted by PHICH. EPDCCH and PDSCH (downlink shared data channel) are frequency division multiplexed, and used for transmission of DCI and the like in the same manner as PDCCH.

In the radio communication system 1, as Uplink channels, an Uplink Shared Channel (PUSCH) Shared by each user terminal 20, an Uplink Control Channel (PUCCH) Shared by each user terminal, a Random Access Channel (PRACH) Shared by each user terminal, and the like are used. User data, higher layer control information, etc. are transmitted through the PUSCH. In addition, radio Quality information (CQI: Channel Quality Indicator), acknowledgement information, Scheduling Request (SR), and the like of the downlink are transmitted through the PUCCH. Through the PRACH, a random access preamble for establishing a connection with a cell is transmitted.

In the wireless communication system 1, as downlink Reference signals, Cell-specific Reference signals (CRS), Channel state information Reference signals (CSI-RS), DeModulation Reference signals (DMRS), Positioning Reference Signals (PRS), and the like are transmitted. In addition, in the wireless communication system 1, as an uplink reference signal, a measurement reference signal (SRS: Sounding reference signal), a demodulation reference signal (DMRS), and the like are transmitted. In addition, the DMRS may be referred to as a user terminal-specific Reference Signal (UE-specific Reference Signal). In addition, the transmitted reference signal is not limited thereto.

< radio base station >

Fig. 8 is a diagram showing an example of the overall configuration of a radio base station according to an embodiment of the present invention. The radio base station 10 includes a plurality of transmission/reception antennas 101, an amplifier unit 102, a transmission/reception unit 103, a baseband signal processing unit 104, a call processing unit 105, and a transmission line interface 106. The transmission/reception antenna 101, the amplifier unit 102, and the transmission/reception unit 103 may be configured to include one or more antennas.

User data transmitted from the radio base station 10 to the user terminal 20 in the downlink is input from the upper station apparatus 30 to the baseband signal processing unit 104 via the transmission line interface 106.

In baseband signal processing section 104, with respect to user Data, transmission processes such as PDCP (Packet Data Convergence Protocol) layer processing, segmentation/coupling of user Data, RLC (Radio Link Control) layer transmission processing such as RLC retransmission Control, MAC (Medium access Control) retransmission Control (for example, HARQ transmission processing), scheduling, transport format selection, channel coding, Inverse Fast Fourier Transform (IFFT) processing, and precoding processing are performed, and the user Data is transferred to transmitting/receiving section 103. The downlink control signal is also subjected to transmission processing such as channel coding and inverse fast fourier transform, and is transferred to transmitting/receiving section 103.

Transmission/reception section 103 converts the baseband signal, which is output by precoding for each antenna from baseband signal processing section 104, into a radio frequency band, and transmits the radio frequency band. The radio frequency signal subjected to frequency conversion in transmission/reception section 103 is amplified by amplifier section 102 and transmitted from transmission/reception antenna 101. The transmitting/receiving unit 103 can be constituted by a transmitter/receiver, a transmitting/receiving circuit, or a transmitting/receiving device described based on common knowledge in the technical field related to the present invention. The transmission/reception section 103 may be configured as an integrated transmission/reception section, or may be configured by a transmission section and a reception section.

On the other hand, as for the uplink signal, the radio frequency signal received by the transmission/reception antenna 101 is amplified by the amplifier unit 102. Transmission/reception section 103 receives the uplink signal amplified by amplifier section 102. Transmission/reception section 103 frequency-converts the received signal into a baseband signal, and outputs the baseband signal to baseband signal processing section 104.

The baseband signal processing section 104 performs Fast Fourier Transform (FFT) processing, Inverse Discrete Fourier Transform (IDFT) processing, error correction decoding, reception processing of MAC retransmission control, and reception processing of the RLC layer and the PDCP layer on the user data included in the input uplink signal, and transfers the user data to the upper station apparatus 30 via the transmission path interface 106. The call processing unit 105 performs call processing (setting, release, and the like) of a communication channel, state management of the radio base station 10, management of radio resources, and the like.

The transmission line interface 106 transmits and receives signals to and from the upper station apparatus 30 via a predetermined interface. Further, the transmission path interface 106 may transmit and receive signals (backhaul signaling) with other wireless base stations 10 via an inter-base station interface (e.g., an optical fiber based Common Public Radio Interface (CPRI), an X2 interface).

Transmission/reception section 103 transmits and/or receives a signal using a plurality of TTIs (TTI lengths) having different lengths. For example, transmission/reception section 103 may receive a signal in one or more carriers (cells, CCs) using a first TTI (e.g., long TTI) and a second TTI (e.g., short TTI) having a shorter TTI length than the first TTI.

For example, transmission/reception section 103 may receive, from user terminal 20, a short PUCCH and a long PUCCH that are multiplexed (e.g., TDM and/or FDM) and transmitted in a predetermined period (e.g., 1 slot).

Further, transmission/reception section 103 may transmit at least one of information on a UCI type transmittable in the long PUCCH and/or the short PUCCH, information on time and/or frequency resources of the long PUCCH and/or the short PUCCH, and information (setting information) on a multiplexing method of the long PUCCH and/or the short PUCCH in the same slot to user terminal 20.

Transmission/reception section 103 can receive capability information on the capability of multiplexing short PUCCH and long PUCCH in the predetermined period from user terminal 20.

Fig. 9 is a diagram showing an example of a functional configuration of a radio base station according to an embodiment of the present invention. In this example, the functional blocks of the characteristic parts in the present embodiment are mainly shown, and the radio base station 10 is provided with other functional blocks necessary for radio communication.

The baseband signal processing section 104 includes at least a control section (scheduler) 301, a transmission signal generation section 302, a mapping section 303, a reception signal processing section 304, and a measurement section 305. These configurations may be included in the radio base station 10, and a part or all of the configurations may not be included in the baseband signal processing section 104.

The control unit (scheduler) 301 performs overall control of the radio base station 10. The control unit 103 can be configured by a controller, a control circuit, or a control device described based on common knowledge in the technical field related to the present invention.

The control section 301 controls generation of a signal by the transmission signal generation section 302, distribution of a signal by the mapping section 303, and the like. Further, the control unit 301 controls reception processing of signals by the reception signal processing unit 304, measurement of signals by the measurement unit 305, and the like.

Control section 301 controls scheduling (e.g., resource allocation) of system information, downlink data signals (e.g., signals transmitted via PDSCH), downlink control signals (e.g., signals transmitted via PDCCH and/or EPDCCH. Control section 301 also controls generation of a downlink control signal, a downlink data signal, and the like based on the result of determining whether retransmission control for an uplink data signal is necessary or not. Further, control section 301 controls scheduling of Synchronization signals (e.g., Primary Synchronization Signal (PSS)/Secondary Synchronization Signal (SSS)), downlink reference signals (e.g., CRS, CSI-RS, DMRS), and the like.

Further, control section 301 controls scheduling of an uplink data signal (e.g., a signal transmitted on the PUSCH), an uplink control signal (e.g., a signal transmitted on the PUCCH and/or the PUSCH, acknowledgement information, etc.), a random access preamble (e.g., a signal transmitted on the PRACH), an uplink reference signal, and the like.

Control section 301 controls transmission and/or reception of signals in one or more CCs using a first TTI (e.g., a long TTI, a subframe, a slot, etc.) and a second TTI (e.g., a short TTI, an sTTI, a mini-slot, etc.) having a shorter TTI length than the first TTI.

For example, control section 301 may determine (control) whether or not a predetermined user terminal 20 multiplexes a short uplink control channel (short PUCCH) having a short time length and a long uplink control channel (long PUCCH) having a longer time length than the short uplink control channel for a predetermined period. Control section 301 may also perform control to transmit information (setting information) on the multiplexing method of the long PUCCH and the short PUCCH in the same slot to a predetermined user terminal 20.

Control section 301 may perform this determination based on the capability information of predetermined user terminal 20 acquired from received signal processing section 304. The capability information may be information on a capability of multiplexing the short PUCCH and the long PUCCH in the predetermined period.

The predetermined period may be one or more TTIs, and may be one or more slots, one or more mini-slots, or the like, for example.

The control unit 301 may also perform the following control: for a predetermined user terminal 20, the PUCCH resource of the short PUCCH and/or the long PUCCH is determined, and information for setting the PUCCH resource is transmitted to the user terminal 20.

Transmission signal generating section 302 generates a downlink signal (downlink control signal, downlink data signal, downlink reference signal, and the like) based on an instruction from control section 301, and outputs it to mapping section 303. The transmission signal generation unit 302 can be configured by a signal generator, a signal generation circuit, or a signal generation device described based on common knowledge in the technical field related to the present invention.

Transmission signal generating section 302 generates, for example, a DL assignment for notifying assignment information of downlink data and/or an UL grant for notifying assignment information of uplink data, based on an instruction from control section 301. Both DL allocation and UL grant are DCI, complying with the DCI format. The downlink data signal is subjected to coding processing and modulation processing according to a coding rate, a modulation scheme, and the like determined based on Channel State Information (CSI) and the like from each user terminal 20.

Mapping section 303 maps the downlink signal generated in transmission signal generating section 302 to a predetermined radio resource based on an instruction from control section 301, and outputs the result to transmitting/receiving section 103. The mapping unit 303 can be constituted by a mapper, a mapping circuit, or a mapping device explained based on common knowledge in the technical field to which the present invention relates.

Received signal processing section 304 performs reception processing (for example, demapping, demodulation, decoding, and the like) on the received signal input from transmission/reception section 103. Here, the reception signal is, for example, an uplink signal (an uplink control signal, an uplink data signal, an uplink reference signal, or the like) transmitted from the user terminal 20. The received signal processing unit 304 can be constituted by a signal processor, a signal processing circuit, or a signal processing device described based on common knowledge relating to the present invention.

The received signal processing unit 304 outputs the information decoded by the reception processing to the control unit 301. For example, when a PUCCH including HARQ-ACK is received, the HARQ-ACK is output to control section 301. Further, the received signal processing unit 304 outputs the received signal and/or the reception-processed signal to the measurement unit 305.

The measurement unit 305 performs measurements related to the received signal. The measurement unit 305 can be constituted by a measurement instrument, a measurement circuit, or a measurement device described based on common knowledge in the technical field related to the present invention.

For example, the measurement unit 305 may perform Radio Resource Management (RRM) measurement, Channel State Information (CSI) measurement, and the like based on the received signal. The measurement unit 305 may also measure reception Power (e.g., Reference Signal Received Power (RSRP)), reception Quality (e.g., Reference Signal Received Quality (RSRQ)), Signal-to-Interference plus Noise Ratio (SINR), Signal-to-Noise Ratio (SNR)), Signal Strength (e.g., Received Signal Strength Indicator (RSSI)), propagation path information (e.g., CSI), and the like. The measurement result may be output to the control unit 301.

(user terminal)

Fig. 10 is a diagram showing an example of the overall configuration of a user terminal according to an embodiment of the present invention. The user terminal 20 includes a plurality of transmission/reception antennas 201, an amplifier unit 202, a transmission/reception unit 203, a baseband signal processing unit 204, and an application unit 205. The transmission/reception antenna 201, the amplifier unit 202, and the transmission/reception unit 203 may be configured to include one or more antennas.

The radio frequency signal received by the transmission and reception antenna 201 is amplified in the amplifier unit 202. Transmission/reception section 203 receives the downlink signal amplified by amplifier section 202. Transmission/reception section 203 frequency-converts the received signal into a baseband signal and outputs the baseband signal to baseband signal processing section 204. The transmitting/receiving unit 203 can be constituted by a transmitter/receiver, a transmitting/receiving circuit, or a transmitting/receiving device, which is described based on common knowledge in the technical field related to the present invention. The transmission/reception unit 203 may be an integrated transmission/reception unit, or may be composed of a transmission unit and a reception unit.

The baseband signal processing section 204 performs FFT processing, error correction decoding, reception processing of retransmission control, and the like on the input baseband signal. The downlink user data is forwarded to the application unit 205. The application section 205 performs processing and the like relating to layers higher than the physical layer and the MAC layer. In addition, the broadcast information may also be transferred to the application unit 205 in downlink data.

On the other hand, uplink user data is input from the application section 205 to the baseband signal processing section 204. Baseband signal processing section 204 performs transmission processing for retransmission control (for example, transmission processing for HARQ), channel coding, precoding, Discrete Fourier Transform (DFT) processing, IFFT processing, and the like, and transfers the result to transmission/reception section 203. Transmission/reception section 203 converts the baseband signal output from baseband signal processing section 204 into a radio frequency band and transmits the radio frequency band. The radio frequency signal subjected to frequency conversion in transmission/reception section 203 is amplified by amplifier section 202 and transmitted from transmission/reception antenna 201.

The transmission/reception unit 203 can transmit and/or receive a signal using a plurality of TTIs (TTI lengths) of different lengths. For example, transmission/reception section 203 may transmit a signal in one or more carriers (cells, CCs) using a first TTI (e.g., long TTI) and a second TTI (e.g., short TTI) having a shorter TTI length than the first TTI.

For example, the transmission/reception unit 203 may multiplex (e.g., TDM and/or FDM) the short PUCCH and the long PUCCH in a predetermined period (e.g., 1 slot) and transmit the result to the radio base station 10.

Further, the transmission/reception unit 203 may receive at least one of information on a UCI type that can be transmitted through the long PUCCH and/or the short PUCCH, information on time and/or frequency resources of the long PUCCH and/or the short PUCCH, and information (setting information) on a multiplexing method of the long PUCCH and/or the short PUCCH in the same slot from the radio base station 20.

The transmission/reception section 203 can transmit capability information on the capability of multiplexing the short PUCCH and the long PUCCH to the radio base station 10 for the predetermined period.

Fig. 11 is a diagram showing an example of a functional configuration of a user terminal according to an embodiment of the present invention. In this example, the functional blocks of the characteristic parts in the present embodiment are mainly shown, and the user terminal 20 is assumed to have other functional blocks necessary for wireless communication.

The baseband signal processing unit 204 included in the user terminal 20 includes at least a control unit 401, a transmission signal generation unit 402, a mapping unit 403, a received signal processing unit 404, and a measurement unit 405. These configurations may be included in the user terminal 20, and a part or all of the configurations may not be included in the baseband signal processing section 204.

The control unit 401 performs overall control of the user terminal 20. The control unit 401 can be configured by a controller, a control circuit, or a control device described based on common knowledge in the technical field related to the present invention.

Control section 401 controls generation of a signal by transmission signal generation section 402, mapping of a signal by mapping section 403, and the like, for example. Further, control section 401 controls reception processing of signals by reception signal processing section 404, measurement of signals by measurement section 405, and the like.

Control section 401 acquires the downlink control signal and the downlink data signal transmitted from radio base station 10 from received signal processing section 404. Control section 401 controls generation of an uplink control signal and/or an uplink data signal based on the result of determination of necessity or unnecessity of retransmission control for a downlink control signal and/or a downlink data signal, and the like.

Control section 401 controls transmission and/or reception of signals in one or more CCs using a first TTI (e.g., a long TTI, a subframe, a slot, etc.) and a second TTI (e.g., a short TTI, an sTTI, a mini-slot, etc.) having a shorter TTI length than the first TTI.

For example, control section 401 can determine whether or not to multiplex a short uplink control channel (short PUCCH) having a short time length and a long uplink control channel (long PUCCH) having a longer time length than the short uplink control channel for a predetermined period.

Control section 401 can make this determination based on the setting information acquired from received signal processing section 404. The predetermined period may be one or more TTIs, and may be one or more slots, one or more mini-slots, or the like, for example.

When determining, based on the setting information, that the short PUCCH and the long PUCCH are multiplexed within the predetermined period, control section 401 may perform control to transmit UCI corresponding to different UCI types in the short PUCCH and the long PUCCH, respectively.

Based on the setting information, control section 401 can perform control to discard any one of the PUCCHs or to puncture overlapping resources of any one of the PUCCHs when it is determined that the short PUCCH and the long PUCCH are multiplexed in the predetermined period and the resources of the short PUCCH and the resources of the long PUCCH at least partially overlap.

Control section 401 may perform control to discard any one of the short PUCCH and the long PUCCH when it is determined based on the setting information that the short PUCCH and the long PUCCH are not multiplexed within the predetermined period and the short PUCCH and the long PUCCH are set to be transmitted within the predetermined period.

Control section 401 can perform control for transmitting capability information (for example, capability information on the presence or absence of capability) relating to the capability of multiplexing short PUCCH and long PUCCH in the predetermined period. In this case, the setting information used for the determination may be determined by the radio base station 10 based on the capability information, for example.

The control unit 401 may also control generation and/or mapping of UCI transmitted through the short PUCCH and/or the long PUCCH. The control unit 401 may perform control of transmitting UCI corresponding to the same UCI type through the short PUCCH and the long PUCCH, or may perform control of transmitting UCI corresponding to different (separate) UCI types, for example. Control section 401 may determine PUCCH resources of the short PUCCH and/or the long PUCCH.

When various information notified from radio base station 10 is acquired from received signal processing section 404, control section 401 may update the parameters used for control based on the information.

Transmission signal generating section 402 generates an uplink signal (an uplink control signal, an uplink data signal, an uplink reference signal, and the like) based on an instruction from control section 401, and outputs the uplink signal to mapping section 403. The transmission signal generation unit 402 can be configured by a signal generator, a signal generation circuit, or a signal generation device, which are described based on common knowledge in the technical field related to the present invention.

Transmission signal generating section 402 generates an uplink control signal related to transmission acknowledgement information, Channel State Information (CSI), and the like, for example, based on a command from control section 401. Transmission signal generation section 402 also generates an uplink data signal based on an instruction from control section 401. For example, when the UL grant is included in the downlink control signal notified from the radio base station 10, the transmission signal generating unit 402 instructs the control unit 401 to generate the uplink data signal.

Mapping section 403 maps the uplink signal generated in transmission signal generating section 402 to a radio resource based on an instruction from control section 401 and outputs the mapped uplink signal to transmitting/receiving section 203. The mapping unit 403 can be constituted by a mapper, a mapping circuit, or a mapping device explained based on common knowledge in the technical field to which the present invention relates.

Received signal processing section 404 performs reception processing (for example, demapping, demodulation, decoding, and the like) on the received signal input from transmission/reception section 203. Here, the reception signal is, for example, a downlink signal (downlink control signal, downlink data signal, downlink reference signal, and the like) transmitted from the radio base station 10. The received signal processing unit 404 can be constituted by a signal processor, a signal processing circuit, or a signal processing device described based on common knowledge in the technical field related to the present invention. Further, the received signal processing unit 404 can constitute a receiving unit according to the present invention.

The received signal processing unit 404 outputs information decoded by the reception processing to the control unit 401. Received signal processing section 404 outputs, for example, broadcast information, system information, RRC signaling, DCI, and the like to control section 401. Further, the received signal processing unit 404 outputs the received signal and/or the signal after the reception processing to the measurement unit 405.

The measurement unit 405 performs measurements related to the received signal. The measurement unit 405 can be configured by a measurement instrument, a measurement circuit, or a measurement device described based on common knowledge in the technical field related to the present invention.

For example, the measurement unit 405 may perform RRM measurement, CSI measurement, and the like based on the received signal. Measurement unit 405 may measure received power (e.g., RSRP), received quality (e.g., RSRQ, SINR, SNR), signal strength (e.g., RSSI), propagation path information (e.g., CSI), and the like. The measurement result may be output to the control unit 401.

(hardware construction)

The block diagrams used in the description of the above embodiments represent blocks in functional units. These functional blocks (structural units) are implemented by any combination of hardware and/or software. Note that the means for implementing each functional block is not particularly limited. That is, each functional block may be implemented by 1 apparatus which is physically and/or logically combined, or by a plurality of apparatuses which are directly and/or indirectly (for example, wired and/or wireless) connected to 2 or more apparatuses which are physically and/or logically separated.

For example, the radio base station, the user terminal, and the like in one embodiment of the present invention can function as a computer that performs processing of the radio communication method of the present invention. Fig. 12 is a diagram showing an example of hardware configurations of a radio base station and a user terminal according to an embodiment of the present invention. The radio base station 10 and the user terminal 20 may be physically configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like.

In the following description, the term "device" may be replaced with a circuit, an apparatus, a unit, or the like. The hardware configuration of the radio base station 10 and the user terminal 20 may include one or more of the illustrated devices, or may not include some of the devices.

For example, only one processor 1001 is shown, but there may be multiple processors. The processing may be executed by 1 processor, or the processing may be executed by 1 or more processors simultaneously, sequentially, or in another method. In addition, the processor 1001 may be implemented by 1 or more chips.

Each function in the radio base station 10 and the user terminal 20 is realized by, for example, reading predetermined software (program) into hardware such as the processor 1001 and the memory 1002, performing an operation by the processor 1001, and controlling communication by the communication device 1004 or controlling reading and/or writing of data in the memory 1002 and the storage 1003.

The processor 1001, for example, causes an operating system to operate to control the entire computer. The processor 1001 may be constituted by a Central Processing Unit (CPU) including an interface with peripheral devices, a control device, an arithmetic device, a register, and the like. For example, the baseband signal processing section 104(204), the call processing section 105, and the like may be implemented by the processor 1001.

Further, the processor 1001 reads a program (program code), a software module, data, and the like from the storage 1003 and/or the communication device 1004 to the memory 1002, and executes various processes based on them. As the program, a program that causes a computer to execute at least a part of the operations described in the above embodiments is used. For example, the control unit 401 of the user terminal 20 may be realized by a control program stored in the memory 1002 and operated in the processor 1001, and may be similarly realized with respect to other functional blocks.

The Memory 1002 is a computer-readable recording medium, and may be configured by at least one of ROM (Read Only Memory), EPROM (erasable Programmable ROM), EEPROM (electrically EPROM), RAM (Random Access Memory), and other suitable storage media. The memory 1002 may also be referred to as a register, cache, main memory (primary storage), or the like. The memory 1002 can store a program (program code), a software module, and the like that can be executed to implement the wireless communication method according to the embodiment of the present invention.

The storage 1003 is a computer-readable recording medium, and may be configured by at least one of a flexible disk, a floppy (registered trademark) disk, an optical magnetic disk (e.g., a compact disk (CD-rom), a compact Disc (rom), etc.), a digital versatile disk, a Blu-ray (registered trademark) disk), a removable disk, a hard disk drive, a smart card, a flash memory device (e.g., a card, a stick, a key drive), a magnetic stripe, a database, a server, and other suitable storage media. The storage 1003 may also be referred to as a secondary storage device.

The communication device 1004 is hardware (transmission/reception device) for performing communication between computers via a wired and/or wireless network, and is also referred to as a network device, a network controller, a network card, a communication module, or the like, for example. The communication device 1004 may be configured to include a high-Frequency switch, a duplexer, a filter, a Frequency synthesizer, and the like, for example, in order to realize Frequency Division Duplex (FDD) and/or Time Division Duplex (TDD). For example, the transmission/reception antennas 101 and 201, the amplifier units 102 and 202, the transmission/reception units 103 and 203, the transmission line interface 106, and the like described above may be implemented in the communication device 1004.

The input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a key, a sensor, and the like) that receives an input from the outside. The output device 1006 is an output device (for example, a display, a speaker, an LED (Light Emitting Diode) lamp, or the like) that outputs to the outside. The input device 1005 and the output device 1006 may be integrated (for example, a touch panel).

Further, the processor 1001, the memory 1002, and the like are connected by a bus 1007 for communicating information. The bus 1007 may be constituted by a single bus, or may be constituted by different buses between devices.

The radio base station 10 and the user terminal 20 may be configured by hardware such as a microprocessor, a Digital Signal Processor (DSP), an ASIC (Application Specific integrated circuit), a PLD (Programmable Logic Device), and an FPGA (Field Programmable Gate Array), and a part or all of the functional blocks may be realized by the hardware. For example, the processor 1001 may be implemented by at least one of these hardware.

(modification example)

In addition, terms described in the present specification and/or terms necessary for understanding the present specification may be replaced with terms having the same or similar meanings. For example, the channels and/or symbols may also be signals (signaling). Further, the signal may also be a message. The Reference Signal can also be referred to simply as RS (Reference Signal) and, depending on the standard applied, may also be referred to as Pilot (Pilot), Pilot Signal, etc. In addition, a Component Carrier (CC) may also be referred to as a cell, a Carrier frequency, a site (site), a beam, and the like.

The radio frame may be configured of one or more periods (frames) in the time domain. The one or more periods (frames) constituting the radio frame may also be referred to as subframes. Further, a subframe may also be composed of one or more slots in the time domain. The subframe may be a fixed length of time (e.g., 1ms) that is independent of the parameter set.

Further, the slot may be formed of one or more symbols in the time domain (Orthogonal Frequency Division Multiplexing (OFDM) symbols, single carrier Frequency Division Multiple Access (SC-FDMA) symbols, or the like). Further, the time slot may be a time unit based on the parameter set. In addition, a timeslot may also contain multiple mini-timeslots. Each mini-slot may also be made up of one or more symbols in the time domain. In addition, a mini-slot may be referred to as a sub-slot.

The radio frame, subframe, slot, mini-slot, and symbol all represent a unit of time when a signal is transmitted. The radio frame, subframe, slot, mini-slot, and symbol may also use other designations corresponding to each. For example, 1 subframe may also be referred to as a Transmission Time Interval (TTI), a plurality of consecutive subframes may also be referred to as TTIs, and 1 slot or 1 mini-slot may also be referred to as TTIs. That is, the subframe and/or TTI may be a subframe (1ms) in the conventional LTE, may be a period shorter than 1ms (for example, 1 to 13 symbols), or may be a period longer than 1 ms. The unit indicating TTI may be referred to as a slot, a mini slot, or the like, instead of a subframe.

Here, the TTI refers to, for example, the minimum time unit of scheduling in wireless communication. For example, in the LTE system, the radio base station performs scheduling for allocating radio resources (such as a frequency bandwidth and transmission power usable by each user terminal) to each user terminal in units of TTIs. In addition, the definition of TTI is not limited thereto.

The TTI may be a transmission time unit of a channel-coded data packet (transport block), code block, and/or code word, or may be a processing unit of scheduling, link adaptation, and the like. In addition, given a TTI, the time interval (e.g., number of symbols) in which the transport block, code block, and/or codeword are actually mapped may also be shorter than the TTI.

In addition, when 1 slot or 1 mini-slot is referred to as a TTI, 1 or more TTIs (i.e., one or more slots or one or more mini-slots) can be the minimum time unit for scheduling. In addition, the number of slots (mini-slot number) constituting the minimum time unit of the schedule may also be controlled.

A TTI having a time length of 1ms may be referred to as a normal TTI (TTI in LTE rel.8-12), a standard TTI, a long TTI, a normal subframe, a standard subframe, a long subframe, or the like. A TTI shorter than a normal TTI may be referred to as a shortened TTI, a short TTI, a partial TTI, a shortened subframe, a short subframe, a mini-subframe, or a sub-slot, etc.

In addition, a long TTI (e.g., a normal TTI, a subframe, etc.) may be replaced with a TTI having a time length exceeding 1ms, and a short TTI (e.g., a shortened TTI, etc.) may be replaced with a TTI having a TTI length smaller than the TTI length of the long TTI and 1 ms.

A Resource Block (RB) is a Resource allocation unit in the time domain and the frequency domain, and may include one or a plurality of continuous subcarriers (subcarriers) in the frequency domain. In addition, an RB may include one or more symbols in the time domain, and may have a length of 1 slot, 1 mini-slot, 1 subframe, or 1 TTI. Each of the 1 TTI and 1 subframe may be configured by one or more resource blocks. In addition, one or more RBs may be referred to as Physical Resource Blocks (PRBs), Sub-Carrier groups (SCGs), Resource Element Groups (REGs), PRB pairs, RB peers, and so on.

In addition, a Resource block may also be composed of one or more Resource Elements (REs). For example, 1 RE may be a radio resource region of 1 subcarrier and 1 symbol.

The structure of the radio frame, the subframe, the slot, the mini slot, the symbol, and the like is merely an example. For example, the configuration of the number of subframes included in a radio frame, the number of slots included in each subframe or radio frame, the number of mini-slots included in a slot, the number of symbols and RBs included in a slot or mini-slot, the number of subcarriers included in an RB, the number of symbols in a TTI, the symbol length, the Cyclic Prefix (CP) length, and the like can be variously changed.

The information, parameters, and the like described in the present specification may be expressed by absolute values, relative values to predetermined values, or other corresponding information. For example, the radio resource may be indicated by a predetermined index. Further, the equations and the like using these parameters may be different from those explicitly disclosed in the present specification.

The names used for parameters and the like in the present specification are not limitative in any point. For example, various channels (PUCCH (Physical Uplink Control Channel), PDCCH (Physical Downlink Control Channel), and the like) and information elements can be identified by all appropriate names, and therefore, various names assigned to these various channels and information elements are not limited in any point.

Information, signals, and the like described in this specification can be represented using any of a variety of different technologies. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or photons, or any combination thereof.

Further, information, signals, and the like may be output from an upper layer to a lower layer and/or from a lower layer to an upper layer. Information, signals, and the like may be input and output via a plurality of network nodes.

The information, signals, and the like to be input and output may be stored in a specific area (for example, a memory) or may be managed by a management table. The information, signals, and the like to be input and output may be rewritten, updated, or added. The information, signals, etc. that are output may also be deleted. The input information, signal, and the like may be transmitted to other devices.

The information notification is not limited to the embodiments and modes described in the present specification, and may be performed by other methods. For example, the Information notification may be performed by physical layer signaling (e.g., Downlink Control Information (DCI)), Uplink Control Information (UCI), higher layer signaling (e.g., RRC (Radio resource Control) signaling), broadcast Information (Master Information Block, System Information Block (SIB), etc.), MAC (Medium Access Control) signaling), other signals, or a combination thereof.

In addition, physical Layer signaling may also be referred to as L1/L2 (Layer 1/Layer 2)) control information (L1/L2 control signals), L1 control information (L1 control signals), and the like. The RRC signaling may be referred to as an RRC message, and may be, for example, an RRC connection setup (RRCConnectionSetup) message, an RRC connection reconfiguration (RRCConnectionReconfiguration) message, or the like. The MAC signaling may be notified by a MAC Control Element (MAC CE (Control Element)), for example.

Note that the notification of the predetermined information (for example, the notification of "X") is not limited to be explicitly performed, and may be performed implicitly (for example, by not performing the notification of the predetermined information or by performing the notification of other information).

The determination may be performed by a value (0 or 1) represented by 1 bit, by a true-false value (borolean) represented by true (true) or false (false), or by a comparison of values (for example, a comparison with a predetermined value).

Software, whether referred to as software, firmware, middleware, microcode, hardware description language, or by other names, is intended to be broadly interpreted as representing instructions, instruction sets, code segments, program code, programs, subroutines, software modules, applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, and the like.

Further, software, instructions, information, etc. may be transmitted or received via a transmission medium. For example, where the software is transmitted from a website, server, or other remote source using wire-based technologies (e.g., coaxial cable, fiber optic cable, twisted pair, and Digital Subscriber Line (DSL), etc.) and/or wireless technologies (e.g., infrared, microwave, etc.), such wire-based technologies and/or wireless technologies are encompassed within the definition of transmission medium.

The terms "system" and "network" used in the present specification may be used interchangeably.

In the present specification, terms such as "Base Station (BS)", "radio Base Station", "eNB", "gNB", "cell", "sector", "cell group", "carrier", and "component carrier" are used interchangeably. A base station may be referred to as a fixed station (fixed station), NodeB, eNodeB (eNB), access point (access point), transmission point, reception point, femto cell, small cell, or the like.

A base station can accommodate 1 or more (e.g., 3) cells (also referred to as sectors). In the case where a base station accommodates a plurality of cells, the coverage area of the base station as a whole can be divided into a plurality of smaller areas, and each smaller area can also provide a communication service through a base station subsystem (e.g., a small-sized base station for indoor use (RRH: Remote radio head)). The terms "cell" or "sector" refer to a portion or all of the coverage area of a base station and/or base station subsystem that is in communication service within its coverage area.

In this specification, terms such as "Mobile Station (MS)", "User terminal (User terminal)", "User Equipment (UE)", and "terminal" are used interchangeably. A base station may be referred to as a fixed station (fixed station), NodeB, eNodeB (eNB), access point (access point), transmission point, reception point, femto cell, small cell, or the like.

A mobile station is also sometimes referred to by those skilled in the art as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless communications device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, or some other suitable terminology.

In addition, the radio base station in this specification may be replaced with a user terminal. For example, the aspects and embodiments of the present invention may be applied to a configuration in which communication between a radio base station and a user terminal is replaced with communication between a plurality of user terminals (Device-to-Device (D2D)). In this case, the user terminal 20 may be configured to have the functions of the radio base station 10. The terms "upstream" and "downstream" may be replaced with "side". For example, the uplink channel may be replaced with a side channel.

Similarly, the user terminal in this specification may be replaced with a radio base station. In this case, the radio base station 10 may be configured to have the functions of the user terminal 20.

In this specification, it is assumed that a specific operation performed by a base station is sometimes performed by its upper node (upper node) depending on the case. In a network composed of one or more network nodes (network nodes) having a base station, it is apparent that various operations performed for communication with a terminal may be performed by the base station, 1 or more network nodes other than the base station (for example, an MME (Mobility Management Entity), an S-GW (Serving-Gateway), and the like are considered, but not limited thereto), or a combination thereof.

The embodiments and modes described in this specification may be used alone, may be used in combination, or may be switched depending on execution. Note that, the order of the processing procedures, sequences, flowcharts, and the like of the respective modes and embodiments described in the present specification may be changed as long as they are not contradictory. For example, elements of the various steps are presented in the order of illustration in the method described in the present specification, and the method is not limited to the specific order presented.

The aspects/embodiments described in this specification may be applied to LTE (Long Term Evolution), LTE-a (LTE-Advanced), LTE-B (LTE-Beyond), SUPER 3G, IMT-Advanced, 4G (4th generation Mobile communication System), 5G (5th generation Mobile communication System), FRA (Future Radio Access), New-RAT (Radio Access Technology), NR (New Radio), NX (New Radio Access), FX (Future Radio Access), GSM (registered trademark) (Global System for Mobile communication), GSM (Global System for Mobile communication), Radio Access, IEEE 802.16(WiMAX (registered trademark)), IEEE 802.20, UWB (Ultra-WideBand), Bluetooth (registered trademark), and systems using other appropriate wireless communication methods and/or next-generation systems enhanced based thereon.

The description of "based on" as used in this specification does not mean "based only on" unless explicitly described otherwise. In other words, the expression "based on" means both "based only on" and "based at least on".

Any reference to the use of the terms "first," "second," etc. in this specification is not intended to limit the number or order of such elements in a comprehensive manner. These designations may be used in this specification as a convenient way to distinguish between more than 2 elements. Thus, reference to first and second elements does not mean that only 2 elements may be employed or that the first element must precede the second element in some fashion.

The term "determining" used in the present specification may include various operations. The "determination (decision)" may be regarded as "determination (decision)" or the like, for example, calculation (computing), processing (processing), derivation (deriving), investigation (investigating), search (looking up) (for example, searching in a table, a database, or another data structure), confirmation (ascertaining), or the like. The "determination (decision)" may be regarded as "determination (decision)" performed by receiving (e.g., receiving information), transmitting (e.g., transmitting information), inputting (input), outputting (output), accessing (e.g., accessing data in a memory), and the like. In addition, the "judgment (decision)" may be regarded as "judgment (decision)" to be performed, for example, resolution (resolving), selection (selecting), selection (breathing), establishment (evaluating), and comparison (comparing). That is, "judgment (decision)" may regard several operations as making "judgment (decision)".

The terms "connected", "coupled", and the like, or all variations thereof used in the present specification mean all connections or couplings, directly or indirectly, between 2 or more elements, and can include a case where 1 or more intermediate elements are present between 2 elements that are "connected" or "coupled" to each other. The coupling or connection between the elements may be physical, logical, or a combination thereof. For example, "connected" may also be replaced with "accessed". As used in this specification, it is contemplated that 2 elements can be "connected" or "coupled" to one another using 1 or more wires, cables, and/or printed electrical connections, and as a few non-limiting and non-inclusive examples, by using electromagnetic energy having wavelengths in the radio frequency domain, the microwave region, and/or the light (both visible and invisible) region, or the like.

When the terms "including", "containing" and "comprising" and variations thereof are used in the present specification or claims, these terms are intended to be inclusive in the same manner as the term "comprising". Further, the term "or" as used in the present specification or claims does not mean a logical exclusive or.

The present invention has been described in detail above, but it is obvious to those skilled in the art that the present invention is not limited to the embodiments described in the present specification. The present invention can be implemented as modifications and variations without departing from the spirit and scope of the present invention defined by the claims. Therefore, the description of the present specification is for illustrative purposes and does not have any limiting meaning to the present invention.

Claims (8)

1. A user terminal, comprising:

a receiving unit configured to receive setting information for multiplexing a short uplink control channel having a short time length and a long uplink control channel having a longer time length than the short uplink control channel for a predetermined period; and

and a control unit configured to determine whether to multiplex the short uplink control channel and the long uplink control channel in the predetermined period based on the setting information.

2. The user terminal of claim 1,

the predetermined period is 1 slot.

3. The user terminal of claim 1 or claim 2,

the control unit performs control of transmitting uplink control information corresponding to different types of uplink control information in the short uplink control channel and the long uplink control channel, respectively, when determining, based on the setting information, that the short uplink control channel and the long uplink control channel are multiplexed in the predetermined period.

4. The user terminal of any of claims 1 to 3,

the control unit may discard any one of the uplink control channels or may puncture overlapping resources of any one of the uplink control channels when it is determined, based on the setting information, that the short uplink control channel and the long uplink control channel are time-division multiplexed within the predetermined period and that the resources of the short uplink control channel and the resources of the long uplink control channel overlap.

5. The user terminal of any of claims 1 to 4,

the control unit is configured to discard any one of the short uplink control channel and the long uplink control channel when it is determined, based on the setting information, that the short uplink control channel and the long uplink control channel are not multiplexed within the predetermined period and the control unit is set to transmit the short uplink control channel and the long uplink control channel within the predetermined period.

6. The user terminal of any of claims 1 to 4,

the control unit is configured to discard any one of the short uplink control channel and the long uplink control channel when it is determined, based on the setting information, that the short uplink control channel and the long uplink control channel are not multiplexed within the predetermined period and the control unit is set to transmit the short uplink control channel and the long uplink control channel within the predetermined period.

7. The user terminal of any of claims 1 to 5,

a transmission unit that transmits capability information on whether or not the capability of multiplexing the short uplink control channel and the long uplink control channel is available within the predetermined period,

the setting information is determined based on the capability information.

8. A wireless communication method of a user terminal, comprising:

receiving setting information for multiplexing a short uplink control channel having a short time length and a long uplink control channel having a longer time length than the short uplink control channel for a predetermined period; and

and determining whether to multiplex the short uplink control channel and the long uplink control channel within the predetermined period based on the setting information.

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